body {
  margin: 0;
  padding: 0;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #0b1522;
}
.heart {
  height: 70px;
  width: 70px;
  background: #f20044;
  position: relative;
  transform: rotate(-45deg);
  box-shadow: -10px 10px 90px #f20044;
  animation: heart 0.6s linear infinite;
}
@keyframes heart {
  0% {
    transform: rotate(-45deg) scale(1.07);
  }
  80% {
    transform: rotate(-45deg) scale(1);
  }
  100% {
    transform: rotate(-45deg) scale(0.8);
  }
}

.heart::before {
  content: "";
  position: absolute;
  height: 70px;
  width: 70px;
  background: #f20044;
  top: -50%;
  border-radius: 50px;
  box-shadow: -10px -10px 90px #f20044;
}
.heart::after {
  content: "";
  position: absolute;
  height: 70px;
  width: 70px;
  background: #f20044;
  right: -50%;
  border-radius: 50px;
  box-shadow: 10px 10px 90px #f20044;
}
